Doesnt deserve to be AS overrated
Gameplay: The singleplay campaign is quite well done, it explores the master cheifs role on the ringed planet named 'halo'. It is quite a long and good campaign.
The multiplay is well done as well. It lets up to 4 players at the same time with around 10 or so maps to choose from.
Also the fact that throughout the game you can use human weapons and pick up alien weapons
Graphics: The graphics are up to scratch and are very good. But i think they could still be improved a little but more
Sound: The sound is great. Most of the sound comes from a computer, hologram chick, she tell you what you have to do, what is happening etc. You can also hear aliens screaming, talking and crying. And when you have other marines around, you can hear them talk as well.
Value: This game is worth having, but after you beat it, there is some reply value, but you would need to have your friends over, or play with a sibling in multiplay. As for the singleplay replay value, i doubt you want to complete the campaign over and over again....
Overall its a good game, all xbox owners should have it (well at least if they like FPS), but i think this game is a bit to overrated